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Highly Sensitive and Robust Polysaccharide-Based Composite Hydrogel Sensor Integrated with Underwater Repeatable Self-Adhesion and Rapid Self-Healing for Human Motion Detection
Abstract
Tough, biocompatible, and conductive hydrogel-based strain sensors are attractive in the fields of human motion detection and wearable electronics, whereas it is still a great challenge to simultaneously integrate underwater adhesion and self-healing properties into one hydrogel sensor. Here, a highly stretchable, sensitive, and multifunctional polysaccharide-based dual-network hydrogel sensor was constructed using dialdehyde carboxymethyl cellulose (DCMC), chitosan (CS), poly(acrylic acid) (PAA), and aluminum ions (Al 3+ ). The obtained DCMC/CS/PAA (DCP) composite hydrogels exhibit robust mechanical strength and good adhesive and self-healing properties, due to the reversible dynamic chemical bonds and physical interactions such as Schiff base bonds and metal coordination. The conductivity of hydrogel is 2.6 S/m, and the sensitivity (gauge factor (GF)) is up to 15.56. Notably, the DCP hydrogel shows excellent underwater repeatable adhesion to animal tissues and good self-healing properties in water (self-healing rate > 90%, self-healing time < 10 min). The DCP hydrogel strain sensor can sensitively monitor human motion including finger bending, smiling, and wrist pulse, and it can steadily detect human movement underwater. This work is expected to provide a new strategy for the design of high-performance intelligent sensors, particularly for applications in wet and underwater environments.
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Cited by
Damiri, F., Fatimi, A., Liu, Y., Musuc, A. M., Fajardo, A. R., Gowda, B. H. J., Vora, L. K., Shavandi, A., & Okoro, O. V. (2025) · Carbohydrate Polymers · doi:10.1016/j.carbpol.2024.122845 · Cited by 67
Metadata
- Authors
- Ling, Q., Liu, W., Liu, J., Zhao, L., Ren, Z., & Gu, H.
- Venue
- ACS Applied Materials & Interfaces
- Publisher
- American Chemical Society (ACS)
- Published
- 2022-05-17
- Volume
- 14
- Issue
- 21
- Pages
- 24741-24754
- ISSN
- 1944-8244 (ISSN-L)
- 1944-8252
- OpenAlex
- W4280569149
- Cited by
- 253
- References
- 45
- FWCI
- 15.18
- Type
- journal article
- Language
- en
- Open access
- closed
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